Core apparatus



June 14, 1932.

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Filed June 4, 1929 2 Sheets-Sheet Quwmtoz Wm n n u M mu mm l aw PH. 1 mm 5 Q m m 3 on m .1 0d I 3 FUN .Qnh H E .1 Era ww m H" ill] Patented June 14, 1932 UNITED STATES PATENT OFFICE ERIC SJ'ODEN, OF BUFFALO, NEW YORK, ASSIGNOE TO AMERICAN RADIATOR COMPANY,

OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY GORE APPARATUS "Application filed. June 4, 1929. Serial No. 368,222.

My invention relates to new and useful improvements in core apparatus, and more particularly to a device or apparatus for preparing baked cores of finely divided material for use in a casting operation.

When cores of finely divided material, such as core sand, or the like, are made or formed in a core box, a fin or burr, caused by the meeting of the edges of the core box sections, is left on the core. After the core is dried and hardened, as by baking, or the like, the fin or burr must be removed before the core can be used successfullyincasting. An object of my invention is, therefore, to provide a device or apparatus to remove efficiently this hardened fin or burr. Another object is to'provide a device which is of simple construction. Another object is to provide a device which may be operated with facility by an unskilled operator.

The invention consists in the construction and combination of parts, to be more fully described hereinafter, and the novelty of which will be clearly pointed out and distinctly claimed.

In the accompanying drawings, to be taken as a part of this specificatioml have fully and clearly illustrated a preferred embodiment of my invention, in which drawings- Figure 1 is a view in front elevation of my device or apparatus, with a core member in place;

Fig. 2is a detail view in longitudinal vertical central section of a bed or tablemember forming part of my device;

Fig. 3 is a detail View in longitudinal vertical central section of a supporting member;

Fig. 1 is an end view with the bed or table member shown in section on the line H of Fig. 1;

Fig. 5 is a top plan view showing the cooperable relation between the supporting member and the bed or table member;

Fig. 6 is a detail view partially in vertical central section of a trimmer or cutter member, and

Fig. 7 is a detail View of a modification of my device.

Referring to the drawings by characters of reference, 1 designates, generally, my device or apparatus comprising a bed or table member 2 and a supporting member 3 which is carried thereby. The members 2, 3 may be supported by a rigid frame-work 4:, comprising corner columns or legs 5, 6 braced by suitable 5 cross-members 7 and having ground or surface-engaging rollers or wheels 8 journaled at the bottom ends of legs 6. A hand-grip member 9 may be secured to legs 5, by which that end of the device lmay be lifted for trundling on wheels 8, as is apparent from the drawings, particularly Fig. 1. The columns or legs 5, 6 are rigidly oined at their upper ends to the member 2, preferably by bolts 10, or c the like, or they may be joined by welding, 5 if so desired. Depending from the bed memher 2 intermediate its ends and adjacent the front thereof, are spaced parallel hanger members 11 alined transversely of member 2 and provided at their free ends with alined bearing openings 12 in which is journaled a shaft 13 which projects beyond or through each of members 11. On the end 14L of shaft 13, which projects forwardly from member 2, is ahand-wheel or crank member 15 keyed 7 or otherwise fixed thereto and having a hand grip 16 by which the shaft 13 may be rotated. On the opposite end 17 of shaft 13 which projects beneath member 2 and substantially to the longitudinal center line thereof, is a fly- 0 wheel or the like 18 which is keyed or otherwise fixed thereto and which has a laterally projecting hearing or pivot pin 18 adjacent its circumference, for a purpose to be de-* scribed.

V The member 2 is preferably substantially rectangular and has a depending surrounding flange or skirt 19 to which legs 5, 6 are secured, and also has strengthening cross-ribs 20. Extending from the opposite ends of member 2 are guide members 21, 22 having vertical guide apertures or slots 23, 24; respectively, which extend at their inner ends into the body of member 2 (see Fig. 5), and which are in substantial alinement. Extending along the longitudinal side edges of the slots 23, 2 1 on the top surface of extensions 21, 22, are bearing ribs or beads 25, 25*, respectively, and on the under surface of extensions 21, 22 are similar bearing ribs or beads 26, 27 Depending from the under face of member 2 ad j acent the ends thereof and the front and rear longitudinal and parallel portions of flange 19, and also substantially parallel thereto, are bearing blocks or members 28, preferably four in number. Through flange 19 and each of blocks 28 are alined bearing openings 29 through which are passed pins or shafts 30. Positioned between each of blocks 28 and the adjacent portion of flange 19 and journaled on the shafts 30, are wheels or rollers 31 which preferably have a transversely curved circumferential surface (see Fig. 4), and serve as guiding and supporting means. At spaced points along the front and rear longitudinal side edges of member 2 are upstanding bosses 32, 33, respectively. Intermediate the rows of bosses 32, 33 are transverse rows of spaced bosses, as 34, 35, 36. Through each of the bosses and the member 2, is a substantially vertical, internally threaded bore 37 which at its top end is of enlarged diameter, as at 38, to provide a socket or seat (see Figs. 1 and 2). Threaded into each of the bores 37 for vertical adjustment, is a threaded stem 39 (see Fig. 6) having an intermediate cylindrical head or enlargement 40, which fits into the socket 38 and above which the stem is unthreaded to provide a spindle 41. Rotatable on each spindle 41 is a cutter or trimmer member, comprising a sleeve member 42 which is supported above head 40 by a cap member 43 rigid with sleeve member 42 and resting on the top end of the spindle 41 (see Fig. 6). The member 42 has its cylindrical outer face knurled or serrated, as at 43. A cap screw 44, or the like, is preferably passed through member 43 and threaded into spindle 41 to hold the sleeve member 42 thereon. A screw driver slot 45, or the like, is preferably provided in the bottom end of each stem 39 so that the height of its member 42 above member 2 may be regulated. Lock nuts 46 (see Fig. 1) may be provided to lock each of the members 42 in adj usted position.

The supporting member 3 carried by member 2 has at its front and rear edges longitudinally extending depending rails 47, the under surfaces of which are transversely concave, as at 48 (see Figs. 4 and 7), for cooperation with the transversely curved circumferential surface of rollers 31, which project upward through apertures or slots 31 in the member 2. The rails 47 pass, in their longitudinal move ment or reciprocation, between the longitudinal bosses 32, 33 and the opposite ends of the transverse rows of bosses 34, 35, 36, as is apparent from Fig. 4. The member 3 may be reinforced by ribs 49 on its under face and extending longitudinally thereof in spaced relation (see Fig. 3). Between the ribs 49 are longitudinal slots 50 through member 3 and overlying the bosses 34, 35, 36 and through which those of the members 42 carried by bosses 34, 35 and 36 project (see Fig.

5). At the opposite ends of member 3 are depending guide members 51, 52 which extend downward in cooperative relation with the sides of and through slots 23, 24 respectively. The members 51, 52 have outward extending, downward facing shoulders 53, 54, respectively, which overlie and ride on the bearing beads or ribs 25, 25 Transversely through members 51, 52 are locking pins 55, 56, respectively, which have sliding contact with the ribs 26, 27 and prevent upward movement of member 3 relative to member 2. At the lower free end of member 52 is a laterally projecting bearing pin 57. Extending between fly-wheel 18 and member 52 is a connecting rod 58 pivotaily secured at its ends on the bearing pins 18 and 57 whereby rotation of hand-wheel 15 will cause reciprocation of member 3. Adjacent the ends of the member 3 are substantially vertical apertures or recesses 59, 60 for receiving a part or portion of the core member to permit the same to lie flat upon the member 3. At the ends of member 3 and extending upward therefrom be yond or outside of recesses 59, 60, are cutter or trimmer members 61, 62 respectively, comprising substantially horizontal plate members 63, 64 having their inner facing sides, as 63, 64 contoured to conform to the ends of the core member, and the top inner edges 65, 66 respectively forming sharp angles in a ver tical plane to serve as cutting or trimming edges to remove the burr from the ends of the core member. Each of the members 63, 64 is preferably mounted on a block member 67 and is secured with its member 67 tightly to member 3 by screws or the like 68.

It is to be noted that member 3 is of a width from front to rear such that it will just pass freely between the longitudinal rows of trimmer members 42 carried by bosses 32, 33, and that the slots 50 are of a width substantially equal to the diameter of the trimmer members 42.

In the modification, Fig. 7, the wheel 18 and link 58 are preferably retained and the hand-wheel 15 is dispensed with, and vertical hand-grip members 69 secured, as by screws 70, or the like, to the ends of member 3 outside of members 61, 62, are provided in lieu thereof for reciprocating the member 3.

The operation of my device is as follows: In the accompanying drawings, I have shown the supporting member 3 configured to receive a core member A for use in the casting of radiator or like sections and with thetrim mer members 42 positioned for operation on the tin or burr B which extends laterally from the columns and headers of the core member and substantially in the central plane of the core member. The core member A is picked up by an operator, as by grasping the opposite end hubs A, and the member A is positioned over the supporting member 3 with the depending hubs A registering with nsnaeaa the recesses 59, 60. The member A is then set down upon the member 3 and downward pressure applied by the operator, which will result in the sharp knife-like edges 65, 66 of trimmer members 61, 62 cutting or shearing oil the fin or burrB at the outer ends of the core headers as the body of member A seats upon member 3, as is apparent from Fig. 1. The trimmer or cutter members 42 carried by the rows of bosses 3d, 35 and 36 will pass upward between the columns of the core member A and the members 4L2 carried by bosses 3-1, 33 will pass upward at the sides of member A, the members 42 notching the burr or fin B for the full depth thereof. The member 3 is then reciprocated by the operator, either by rotation of the hand-wheel 15, as above described, or by means of the hand-grips 69 of the modification. As the member 3 moves back and forth, carrying the core member A with it, the fin or burr B will be sheared from the member A by the members l2, as is obvious from the drawings and foregoing description. Normally a single reciprocation will trim the core member, but the operator may note whether the member A is clean of the burr and continue the reciprocation of the member A until the burr is removed. The position of member 3 relative to the bed or table member 2 when the member A is placed on member 3, does not affect the operation, as the link 58 limits the travel of member 3, and a complete stroke of a reciprocation will cause the full length of core member A to traverse the trimmer members 42.

I Wish it to be understood that the toregoing description is not to be construed as limiting my invention to the trimming of radiator cores, as the above description is merely illustrative of one embodiment of my invention and that the same may be used with equal facility for trimming cores having other configurations and adapted for other uses in casting operations.

What I claim and desire to secure by Let-- ters Patent of the United States is:

1. A device for removing a burr from a core member of baked finely divided material, comprising a supporting member operable to support a core member, and means carried by said supporting member and operable upon positioning a core member on said supporting member to remove the burr from the core member.

2. A device for removing a burr from a core member of baked finely divided material, comprising a bed member, a supporting member movably carried'by d bed member and adapted to support a core member, said supporting member having means to remove a portion of the burr from a core member as the core member is positioned on the supporting member, and means carried by said bed member and operable upon relative movement between said last-named means and a eoresmemberzcarried by said: supporting memher to remove another? portion: of the burr fronrtheicorememberz.

. 3. A device for removing awburrtrom a core, memberofbaked finely divided material, comprisinga bed member, asupporting member mounted on said bed, member: for reciprocation and adapted'to receive a core member, means on said supportingmemberito remove aportion-of the burr ona core'member as the core member is positioned onsaid supportinggmembemand means onsa-id bed member operable to' remove! anotherportion' ofthe burr from the core'member' positioned on said supporting member 'upon reciprocation of said supporting, member.

4. A device for removing a burr-from a coremem'ber of baked, finely divided material, comprisingia'bedmember, a supporting member: mounted on said bed'member for reciprocation and adapted to receive a core member, said bed member having guide means for reciprocation of said supporting member, said guide means including roller means rotatably mounted on'said bed member and carrying said; supporting member, meanson' said supporting. member to remove aportion ofi'theburr on a core m'ember as the coremember ispositioned on said supporting member; and means. on saidbed member'oper able to remove another portion of: the burr from the" core" member" positioned on said supporting: member upon reciprocation of said supporting member.

5. A: deflector-removing a burr from a oorememberi' of: baked finely divided material," comprising:- a: bed member, a supporting membermountedforr said bed member for reciprocation and" adapted: to receive a core member, said bed memberhaving'guid'emeans for; reciprocationiof said supporting member, said gluidemeansincluding roller means rotatably mountedon' said'bed member and carrying said supporting member, means OILSiLld: supporting member to remove av portion of the burr ona-core mem'beras the coremember is positioned on' said supporting'member', and" rotatable trimmer means-on said bedi' member operable to rem'ove: anotherportion of the burr fromsthe' core' member positioned on said supporting member upon reciprocation of said. supporting: member;

6'. A, device. for removing-a burr from: a

HID

core member of baked finely divided material, comprising a bed member having a substantially horizontal core supporting member reciprocably mounted thereon, said supporting member having a longitudinal slot, and a horizontally rotatable trimmer member on said bed member and projecting upwardly through said slot.

8. A device for removing a burr from a core member of baked finely divided material, comprising a supporting member operable to support a core member, and transversely extending cutter means mounted at the opposite ends of said supporting member and operable upon positioning a core member on said supporting member to remove the burr from the core member.

9. A. device for removing a burr from a core member of baked finely divided material, comprising a bed member, a supporting member movably carried by said bed member and adapted to support a core member said supporting member having transversely ex tending cutter means at its opposite ends to remove a portion of the burr from a core member as the core member is positioned on the supporting member, and horizontally rotatable trimmer means carried by said bed member at the sides of said supporting member and operable upon relative movement between said supporting member and said bed member to remove portions of the burr from the core member carried by said supporting member.

10. A device for removing a burr from a core member of baked finely divided material, comprising a bed member, a supporting member having a longitudinally extending substantially vertical slot therethrough and being movably carried by said bed member and adapted to support a core member, said supporting member having transversely extending cutter means at its opposite ends to remove a portion of the burr from a core member as the core member is positioned on the supporting member and horizontally rotatable trimmer means carried by said bed member projecting upward through said slot and at the sides of said supporting member and operable upon relative movement between said supporting member and said bed member to remove portions of the burr from the core member carried by said supporting member.

In testimony whereof I have hereunto subscribed my name.

ERIC SJODEN. 

